Java tutorial
/** * Copyright (C) 2011 Whisper Systems * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.thoughtcrime.SMP; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.preference.Preference; import android.support.annotation.NonNull; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.support.v4.preference.PreferenceFragment; import org.thoughtcrime.SMP.crypto.MasterSecret; import org.thoughtcrime.SMP.preferences.AdvancedPreferenceFragment; import org.thoughtcrime.SMP.preferences.AppProtectionPreferenceFragment; import org.thoughtcrime.SMP.preferences.AppearancePreferenceFragment; import org.thoughtcrime.SMP.preferences.NotificationsPreferenceFragment; import org.thoughtcrime.SMP.preferences.SmsMmsPreferenceFragment; import org.thoughtcrime.SMP.preferences.StoragePreferenceFragment; import org.thoughtcrime.SMP.service.KeyCachingService; import org.thoughtcrime.SMP.util.DynamicLanguage; import org.thoughtcrime.SMP.util.DynamicTheme; import org.thoughtcrime.SMP.util.TextSecurePreferences; /** * The Activity for application preference display and management. * * @author Moxie Marlinspike * */ public class ApplicationPreferencesActivity extends PassphraseRequiredActionBarActivity implements SharedPreferences.OnSharedPreferenceChangeListener { private static final String TAG = ApplicationPreferencesActivity.class.getSimpleName(); private static final String PREFERENCE_CATEGORY_SMS_MMS = "preference_category_sms_mms"; private static final String PREFERENCE_CATEGORY_NOTIFICATIONS = "preference_category_notifications"; private static final String PREFERENCE_CATEGORY_APP_PROTECTION = "preference_category_app_protection"; private static final String PREFERENCE_CATEGORY_APPEARANCE = "preference_category_appearance"; private static final String PREFERENCE_CATEGORY_STORAGE = "preference_category_storage"; private static final String PREFERENCE_CATEGORY_ADVANCED = "preference_category_advanced"; private final DynamicTheme dynamicTheme = new DynamicTheme(); private final DynamicLanguage dynamicLanguage = new DynamicLanguage(); @Override protected void onPreCreate() { dynamicTheme.onCreate(this); dynamicLanguage.onCreate(this); } @Override protected void onCreate(Bundle icicle, @NonNull MasterSecret masterSecret) { this.getSupportActionBar().setDisplayHomeAsUpEnabled(true); initFragment(android.R.id.content, new ApplicationPreferenceFragment(), masterSecret); } @Override public void onResume() { super.onResume(); dynamicTheme.onResume(this); dynamicLanguage.onResume(this); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); Fragment fragment = getSupportFragmentManager().findFragmentById(android.R.id.content); fragment.onActivityResult(requestCode, resultCode, data); } @Override public boolean onSupportNavigateUp() { FragmentManager fragmentManager = getSupportFragmentManager(); if (fragmentManager.getBackStackEntryCount() > 0) { fragmentManager.popBackStack(); } else { Intent intent = new Intent(this, ConversationListActivity.class); intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(intent); finish(); } return true; } @Override public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { if (key.equals(TextSecurePreferences.THEME_PREF)) { dynamicTheme.onResume(this); } else if (key.equals(TextSecurePreferences.LANGUAGE_PREF)) { dynamicLanguage.onResume(this); Intent intent = new Intent(this, KeyCachingService.class); intent.setAction(KeyCachingService.LOCALE_CHANGE_EVENT); startService(intent); } } public static class ApplicationPreferenceFragment extends PreferenceFragment { @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); addPreferencesFromResource(R.xml.preferences); MasterSecret masterSecret = getArguments().getParcelable("master_secret"); this.findPreference(PREFERENCE_CATEGORY_SMS_MMS).setOnPreferenceClickListener( new CategoryClickListener(masterSecret, PREFERENCE_CATEGORY_SMS_MMS)); this.findPreference(PREFERENCE_CATEGORY_NOTIFICATIONS).setOnPreferenceClickListener( new CategoryClickListener(masterSecret, PREFERENCE_CATEGORY_NOTIFICATIONS)); this.findPreference(PREFERENCE_CATEGORY_APP_PROTECTION).setOnPreferenceClickListener( new CategoryClickListener(masterSecret, PREFERENCE_CATEGORY_APP_PROTECTION)); this.findPreference(PREFERENCE_CATEGORY_APPEARANCE).setOnPreferenceClickListener( new CategoryClickListener(masterSecret, PREFERENCE_CATEGORY_APPEARANCE)); this.findPreference(PREFERENCE_CATEGORY_STORAGE).setOnPreferenceClickListener( new CategoryClickListener(masterSecret, PREFERENCE_CATEGORY_STORAGE)); this.findPreference(PREFERENCE_CATEGORY_ADVANCED).setOnPreferenceClickListener( new CategoryClickListener(masterSecret, PREFERENCE_CATEGORY_ADVANCED)); } @Override public void onResume() { super.onResume(); ((ApplicationPreferencesActivity) getActivity()).getSupportActionBar() .setTitle(R.string.text_secure_normal__menu_settings); setCategorySummaries(); } private void setCategorySummaries() { this.findPreference(PREFERENCE_CATEGORY_SMS_MMS) .setSummary(SmsMmsPreferenceFragment.getSummary(getActivity())); this.findPreference(PREFERENCE_CATEGORY_NOTIFICATIONS) .setSummary(NotificationsPreferenceFragment.getSummary(getActivity())); this.findPreference(PREFERENCE_CATEGORY_APP_PROTECTION) .setSummary(AppProtectionPreferenceFragment.getSummary(getActivity())); this.findPreference(PREFERENCE_CATEGORY_APPEARANCE) .setSummary(AppearancePreferenceFragment.getSummary(getActivity())); this.findPreference(PREFERENCE_CATEGORY_STORAGE) .setSummary(StoragePreferenceFragment.getSummary(getActivity())); } private class CategoryClickListener implements Preference.OnPreferenceClickListener { private MasterSecret masterSecret; private String category; public CategoryClickListener(MasterSecret masterSecret, String category) { this.masterSecret = masterSecret; this.category = category; } @Override public boolean onPreferenceClick(Preference preference) { Fragment fragment; switch (category) { case PREFERENCE_CATEGORY_SMS_MMS: fragment = new SmsMmsPreferenceFragment(); break; case PREFERENCE_CATEGORY_NOTIFICATIONS: fragment = new NotificationsPreferenceFragment(); break; case PREFERENCE_CATEGORY_APP_PROTECTION: fragment = new AppProtectionPreferenceFragment(); break; case PREFERENCE_CATEGORY_APPEARANCE: fragment = new AppearancePreferenceFragment(); break; case PREFERENCE_CATEGORY_STORAGE: fragment = new StoragePreferenceFragment(); break; case PREFERENCE_CATEGORY_ADVANCED: fragment = new AdvancedPreferenceFragment(); break; default: throw new AssertionError(); } Bundle args = new Bundle(); args.putParcelable("master_secret", masterSecret); fragment.setArguments(args); FragmentManager fragmentManager = getActivity().getSupportFragmentManager(); FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); fragmentTransaction.replace(android.R.id.content, fragment); fragmentTransaction.addToBackStack(null); fragmentTransaction.commit(); return true; } } } }